A musical comes to life in Springfield as Marge stages a revival of her beloved high school show - but her wonderful memories are threatened by the return of a rival from the past.

Marge puts a hurtful word in Lisa's brain and Bart gets swole.

In a flashback, Homer goes on a road trip with his father to find his mother.

When the Boy Explorers become co-ed, Bart and Lisa vow to "out scout" each other at the annual jamboree.

When Homer becomes Duffman's girl-dad hero, they go on a road trip with Lisa that threatens to expose Homer's terrible parenting.

Coach Moe recruits the world's greatest brawlers to teach Nelson the art of hockey goonery.

When Bart's latest prank leads to chaos at Springfield Elementary, Marge and Homer dream of a world in which their rambunctious son was never a Simpson.

When a new neighbor showers him with kindness, Homer thinks he's being tricked into buying a sports car at the dealership where the neighbor works - but the truth turns out to be even more sinister; Lisa neutralizes Nelson after he goes on a bullying spree.

Lisa must solve a closed-boat mystery when Comic Book Guy's million-dollar action figure is "murdered" on a pop culture cruise.